Wells Fargo Fund Class A Class B Class C. Wells Fargo Adjustable Rate Government Fund ESAAX - ESACX. Wells Fargo Core Plus Bond Fund STYAX - WFIPX

Prospectus January 1, 2017 Income Funds Wells Fargo Fund Class A Class B Class C Wells Fargo Adjustable Rate Government Fund ESAAX - ESACX Wells Fargo Core Plus Bond Fund STYAX - WFIPX Wells Fargo Government Securities Fund SGVDX - WGSCX Wells Fargo High Yield Bond Fund EKHAX EKHBX EKHCX Wells Fargo Short Duration Government Bond Fund MSDAX - MSDCX Wells Fargo Short-Term Bond Fund SSTVX - WFSHX Wells Fargo Short-Term High Yield Bond Fund SSTHX - WFHYX Wells Fargo Ultra Short-Term Income Fund SADAX - WUSTX As with all mutual funds, the U.S. Securities and Exchange Commission ("SEC") has not approved or disapproved these securities or passed upon the accuracy or adequacy of this Prospectus. Anyone who tells you otherwise is committing a crime. Fund shares are NOT deposits or other obligations of, or guaranteed by, Wells Fargo Bank, N.A., its affiliates or any other depository institution. Fund shares are not insured or guaranteed by the U.S. Government, the Federal Deposit Insurance Corporation or any other government agency and may lose value.

SUPPLEMENT TO THE PROSPECTUSES, STATEMENT OF ADDITIONAL INFORMATION AND SUMMARY PROSPECTUSES OF WELLS FARGO INCOME FUNDS Wells Fargo Short Duration Government Bond Fund (the "Fund") Troy Ludgood has announced his intention to transition to a new role with Wells Fargo Asset Management on April 30, 2018. After April 30, 2018, all references to Troy Ludgood in the Fund's Prospectuses and Statement of Additional Information are hereby removed. Thomas O Connor, CFA will continue to be a portfolio manager on the Fund. Effective immediately, Maulik Bhansali, CFA, and Jarad Vasquez of Wells Capital Management Incorporated are added as Portfolio Managers for the Fund. I. Prospectus In the section entitled Fund Summary Fund Management for the Fund, the Fund Management table is replaced with the following: Manager Sub-Adviser Portfolio Manager / Managed Since Wells Fargo Funds Management, LLC Wells Capital Management Incorporated Maulik Bhansali, CFA, Portfolio Manager / 2017 Troy Ludgood, Portfolio Manager / 2010 Thomas O'Connor, CFA, Portfolio Manager / 2003 Jarad Vasquez, Portfolio Manager / 2017 In addition, the section entitled The Sub-Advisers and Portfolio Managers is supplemented with the following: Maulik Bhansali, CFA Mr. Bhansali joined Wells Capital Management in 2001, where he currently serves as a Senior Portfolio Manager. Jarad Vasquez Mr. Vasquez joined Wells Capital Management in 2007, where he currently serves as a Senior Portfolio Manager. II. Statement of Additional Information In the section entitled Management Portfolio Managers the Management of Other Accounts and Beneficial Ownership tables in the Funds are amended to add the following information: Portfolio Manager Maulik Bhansali, CFA 1 Registered Investment Companies Number of Accounts 0 Total Assets Managed $0 Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Other Pooled Investment Vehicles Number of Accounts 0 Total Assets Managed $0 Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Other Accounts Number of Accounts 0 Total Assets Managed $0 Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Jarad Vasquez 1 Registered Investment Companies Number of Accounts 0 Total Assets Managed $0 Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Other Pooled Investment Vehicles Number of Accounts 0 Total Assets Managed $0 Number of Accounts Subject to Performance Fee 0

Assets of Accounts Subject to Performance Fee $0 Other Accounts Number of Accounts 0 Total Assets Managed $0 Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Portfolio Manager Fund Beneficial Ownership Maulik Bhansali, CFA 1 Short Duration Government Bond Fund $0 Jarad Vasquez 1 Short Duration Government Bond Fund $0 1 Mssrs.Bhanasali and Vasquez became portfolio managers of the Fund on October 16, 2017. The information presented in this table is as of August 31, 2017, at which time Mssrs.Bhanasali and Vasquez were not portfolio managers of the Fund. October 16, 2017 IF6A107/P1007SP

SUPPLEMENT TO THE PROSPECTUSES and STATEMENT OF ADDITIONAL INFORMATION OF WELLS FARGO INCOME FUNDS Wells Fargo Core Plus Bond Fund Wells Fargo Government Securities Fund (the Funds ) Effective immediately, all references to Ashok Bhatia, CFA in the Funds prospectuses and Statement of Additional Information are hereby removed. I. Core Plus Bond Fund Effective immediately, Michael J. Schueller, CFA, of Wells Capital Management Incorporated is added as a Portfolio Manager for the Fund. A biographical description for Mr. Schueller is included among the Portfolio Manager biographies listed for the Fund as follows: Mr. Schueller joined Wells Capital Management or one of its predecessor firms in 2000, where he currently serves as a Portfolio Manager and Senior Research Analyst specializing in high-yield securities. The Management of Other Accounts and Beneficial Ownership in the Funds tables in the section entitled Portfolio Managers in the Fund s Statement of Additional Information is amended to add the following information: Michael J. Schueller, CFA Registered Investment Companies Number of Accounts 1 Total Assets Managed $1.48B Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Other Pooled Investment Vehicles Number of Accounts 0 Total Assets Managed $333M Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Other Accounts Number of Accounts 0 Total Assets Managed $0 Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Portfolio Manager Fund Beneficial Ownership Michael J. Schueller, Core Plus CFA 1 Bond Fund $0 1 Mr. Schueller became portfolio manager of the Fund on May 23, 2017. The information presented in this table is as of February 28, 2017. II. Government Securities Fund Effective immediately, Michal Stanczyk, of Wells Capital Management Incorporated is added as a Portfolio Manager for the Fund. A biographical description for Mr. Stanczyk is included among the Portfolio Manager biographies listed for the Fund as follows:

Mr. Stanczyk joined Wells Capital Management or one of its predecessor firms in 2007, where he currently serves as a Portfolio Manager in the Fixe d Income team. He was a Research Analyst prior to becoming a Portfolio Manager in 2015. The Management of Other Accounts and Beneficial Ownership in the Funds tables in the section entitled Portfolio Managers in the Fund s Statement of Additional Information is amended to add the following information: Michal Stanczyk Registered Investment Companies Number of Accounts 1 Total Assets Managed $804M Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Other Pooled Investment Vehicles Number of Accounts 0 Total Assets Managed $0 Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Other Accounts Number of Accounts 0 Total Assets Managed $0 Number of Accounts Subject to Performance Fee 0 Assets of Accounts Subject to Performance Fee $0 Portfolio Manager Fund Beneficial Ownership Michal Stanczyk 1 Government Securities Fund $0 1 Mr. Stanczyk became portfolio manager of the Fund on May 23, 2017. The information presented in this table is as of February 28, 2017. May 23, 2017 IFAM057/P1003SP

SUPPLEMENT TO THE PROSPECTUS, SUMMARY PROSPECTUS AND STATEMENT OF ADDITIONAL INFORMATION ( SAI ) OF WELLS FARGO INCOME FUNDS Wells Fargo High Yield Bond Fund (the Fund ) Effective immediately, Class B shareholders of other Wells Fargo Funds are no longer able to exchange their shares for Class B shares of the Fund. Effective on May 6, Class B shares of the Fund will no longer be offered. All references to Class B shares in the Fund s prospectuses, summary prospectuses and SAI will be removed. March 21, 2017 IFR037/P1001S2

SUPPLEMENT TO THE CLASS A PROSPECTUSES OF WELLS FARGO ALLOCATION FUNDS WELLS FARGO ALTERNATIVE FUNDS WELLS FARGO DOW JONES TARGET DATE FUNDS WELLS FARGO DYNAMIC TARGET DATE FUNDS WELLS FARGO EQUITY GATEWAY FUNDS WELLS FARGO INCOME FUNDS WELLS FARGO INTERNATIONAL EQUITY FUNDS WELLS FARGO LARGE CAP STOCK FUNDS WELLS FARGO MUNICIPAL INCOME FUNDS WELLS FARGO SMALL TO MID CAP STOCK FUNDS WELLS FARGO SMALL, MID, ALL CAP STOCK FUNDS WELLS FARGO SPECIALTY FUNDS WELLS FARGO WEALTHBUILDER FUNDS (each a "Fund", together the "Funds") Effective on or about April 10, 2017, the following disclosure is added to the end of the section entitled "Reductions and Waivers of Sales Charges": The availability of certain sales charge waivers and discounts will depend on whether you purchase your shares directly from the Fund or through a financial intermediary. Intermediaries may have different policies and procedures regarding the availability of front-end sales load waivers or contingent deferred (back-end) sales load ("CDSC") waivers, which are discussed below. In all instances, it is the purchaser's responsibility to notify the Fund or the purchaser's financial intermediary at the time of purchase of any relationship or other facts qualifying the purchaser for sales charge waivers or discounts. For waivers and discounts not available through a particular intermediary, shareholders will have to purchase Fund shares directly from the Fund or through another intermediary to receive these waivers or discounts. Effective April 10, 2017, shareholders purchasing Fund shares through a Merrill Lynch platform or account will be eligible only for the following load waivers (front-end sales charge waivers and contingent deferred, or back-end, sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this Fund's prospectus or SAI. Front-end Sales Load Waivers on Class A Shares available at Merrill Lynch Employer-sponsored retirement, deferred compensation and employee benefit plans (including health savings accounts) and trusts used to fund those plans, provided that the shares are not held in a commission-based brokerage account and shares are held for the benefit of the plan Shares purchased by or through a 529 Plan Shares purchased through a Merrill Lynch affiliated investment advisory program Shares purchased by third party investment advisors on behalf of their advisory clients through Merrill Lynch's platform Shares of funds purchased through the Merrill Edge Self-Directed platform (if applicable) Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the fund family) Shares exchanged from Class C (i.e. level-load) shares of the same fund in the month of or following the 10-year anniversary of the purchase date Employees and registered representatives of Merrill Lynch or its affiliates and their family members, as defined by Merrill Lynch, which may differ from the definition of family member in the Fund prospectus. Directors or Trustees of the Fund, and employees of the Fund's investment adviser or any of its affiliates, as described in this prospectus Shares purchased from the proceeds of redemptions within the same fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement). Subject to the Fund's policy regarding frequent purchases and redemptions of Fund shares, you may not be able to repurchase shares for the first 30 days after your redemption. 1

CDSC Waivers on A, B and C Shares available at Merrill Lynch Death or disability of the shareholder Shares sold as part of a systematic withdrawal plan as described in the Fund's prospectus Return of excess contributions from an IRA Account Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching age 70½ Shares sold to pay Merrill Lynch fees but only if the transaction is initiated by Merrill Lynch Shares acquired through a right of reinstatement Shares held in retirement brokerage accounts, that are exchanged for a lower cost share class due to transfer to certain fee based accounts or platforms (applicable to A and C shares only) Front-end load Discounts Available at Merrill Lynch: Breakpoints, Rights of Accumulation & Letters of Intent Breakpoints as described in this prospectus. Rights of Accumulation (ROA) which entitle shareholders to breakpoint discounts will be automatically calculated based on the aggregated holding of fund family assets held by accounts within the purchaser's household at Merrill Lynch. Eligible fund family assets not held at Merrill Lynch may be included in the ROA calculation only if the shareholder notifies his or her financial advisor about such assets Letters of Intent (LOI) which allow for breakpoint discounts based on anticipated purchases within a fund family, through Merrill Lynch, over a 13-month period of time (if applicable) March 2, 2017 AFR037/P501SP 2

Table of Contents Fund Summaries Adjustable Rate Government Fund Summary Core Plus Bond Fund Summary Government Securities Fund Summary High Yield Bond Fund Summary Short Duration Government Bond Fund Summary Short-Term Bond Fund Summary Short-Term High Yield Bond Fund Summary Ultra Short-Term Income Fund Summary Details About the Funds Key Fund Information Adjustable Rate Government Fund Core Plus Bond Fund Government Securities Fund High Yield Bond Fund Short Duration Government Bond Fund Short-Term Bond Fund Short-Term High Yield Bond Fund Ultra Short-Term Income Fund Description of Principal Investment Risks Portfolio Holdings Information Pricing Fund Shares Management of the Funds The Manager The Sub-Adviser and Portfolio Managers Multi-Manager Arrangement Account Information Share Class Eligibility Share Class Features Reductions and Waivers of Sales Charges Compensation to Financial Professionals and Intermediaries Buying and Selling Fund Shares Exchanging Fund Shares Frequent Purchases and Redemptions of Fund Shares Account Policies Distributions 3 7 12 16 21 25 30 35 39 40 41 43 44 46 47 49 50 51 52 53 54 54 55 57 57 59 61 63 64 65 66 67

Table of Contents Other Information Taxes Financial Highlights 69 70

Adjustable Rate Government Fund Summary Investment Objective The Fund seeks current income consistent with capital preservation. Fees and Expenses These tables are intended to help you understand the various costs and expenses you will pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the aggregate in specified classes of certain Wells Fargo Funds. More information about these and other discounts is available from your financial professional and in "Share Class Features" and "Reductions and Waivers of Sales Charges" on pages 57 and 59 of the Prospectus and "Additional Purchase and Redemption Information" on page 61 of the Statement of Additional Information. Shareholder Fees (fees paid directly from your investment) Class A Class C Maximum sales charge (load) imposed on purchases (as a percentage of offering price) 2.00% None Maximum deferred sales charge (load) (as a percentage of offering price) None 1 1.00% 1. Investments of $500,000 or more are not subject to a front-end sales charge but generally will be subject to a deferred sales charge of 0.40% if redeemed within 12 months from the date of purchase. Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Class A Class C Management Fees 0.35% 0.35% Distribution (12b-1) Fees 0.00% 0.75% Other Expenses 0.43% 0.43% Acquired Fund Fees and Expenses 0.01% 0.01% Total Annual Fund Operating Expenses 0.79% 1.54% Fee Waivers (0.04)% (0.04)% Total Annual Fund Operating Expenses After Fee Waiver 1 0.75% 1.50% 1. The Manager has contractually committed through December 31, 2017, to waive fees and/or reimburse expenses to the extent necessary to cap the Fund's Total Annual Fund Operating Expenses After Fee Waiver at 0.74% for Class A and 1.49% for Class C. Brokerage commissions, stamp duty fees, interest, taxes, acquired fund fees and expenses, and extraordinary expenses are excluded from the cap. After this time, the cap may be increased or the commitment to maintain the cap may be terminated only with the approval of the Board of Trustees. Example of Expenses The example below is intended to help you compare the costs of investing in the Fund with the costs of investing in other mutual funds. The example assumes a $10,000 initial investment, 5% annual total return, and that fees and expenses remain the same as in the tables above. To the extent that the Manager is waiving fees or reimbursing expenses, the example assumes that such waiver or reimbursement will only be in place through the date noted above. Although your actual costs may be higher or lower, based on these assumptions your costs would be: Assuming Redemption at End of Period Assuming No Redemption After: Class A Class C Class C 1 Year $275 $253 $153 3 Years $443 $483 $483 5 Years $626 $836 $836 10 Years $1,155 $1,831 $1,831 Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 13% of the average value of its portfolio. 3 Wells Fargo Funds - Income Funds

Principal Investment Strategies Under normal circumstances, we invest: at least 80% of the Fund s net assets in mortgage-backed and asset-backed securities issued or guaranteed by U.S. Government agencies or government-sponsored entities, that have interest rates that reset at periodic intervals; and up to 20% of the Fund s total assets in obligations that pay fixed interest rates. We invest principally in mortgage-backed securities (including collateralized mortgage obligations (CMOs)) and assetbacked securities issued or guaranteed by U.S. Government agencies or government-sponsored entities. Under normal circumstances, we expect to maintain an average credit quality rating for the portfolio equivalent to the highest rating available from a Nationally Recognized Statistical Ratings Organization (NRSRO). In the event that a NRSRO assigns U.S. sovereign debt a rating below its highest rating, we expect to maintain an average credit quality rating that is equivalent to the average rating assigned to U.S. sovereign debt. As part of our mortgage-backed securities investment strategy, we may enter into dollar roll transactions. Under normal circumstances, the dollar-weighted average reset period of the adjustable rate securities held by the Fund will not exceed one year. We employ a top-down, macroeconomic outlook to determine the portfolio's duration, yield curve positioning, issuer selection and sector allocation. Macroeconomic factors considered may include, among others, the pace of economic growth, employment conditions, corporate profits, inflation, monetary and fiscal policy, as well as the influence of international economic and financial conditions. In combination with our top-down macroeconomic approach, we employ a bottom-up process of fundamental securities analysis to select the specific securities for investment. Elements of this evaluation may include the effect of changing principal prepayments, interest rate and yield spread volatility, and the impact of changes in the level and shape of the yield curve on a security's value. We may sell a security based on how we expect these factors to affect a security's value relative to its indicated sales price as well as changes in portfolio strategy or cash flow needs. A security may also be sold and replaced with one that presents a better value or risk/reward profile. Principal Investment Risks An investment in the Fund may lose money, is not a deposit of Wells Fargo Bank, N.A. or its affiliates, is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency, and is primarily subject to the risks briefly summarized below. Credit Risk. The issuer or guarantor of a debt security may be unable or perceived to be unable to pay interest or repay principal when they become due, which could cause the value of an investment to decline and a Fund to lose money. Interest Rate Risk. When interest rates rise, the value of debt securities tends to fall. When interest rates decline, interest that a Fund is able to earn on its investments in debt securities may also decline, but the value of those securities may increase. Management Risk. Investment decisions, techniques, analyses or models implemented by a Fund's manager or subadviser in seeking to achieve the Fund's investment objective may not produce the returns expected, may cause the Fund's shares to lose value or may cause the Fund to underperform other funds with similar investment objectives. Market Risk. The values of, and/or the income generated by, securities held by a Fund may decline due to general market conditions or other factors, including those directly involving the issuers of such securities. Security markets are volatile and may decline significantly in response to adverse issuer, regulatory, political, or economic developments. Different sectors of the market and different security types may react differently to such developments. Mortgage- and Asset-Backed Securities Risk. Mortgage- and asset-backed securities may decline in value and become less liquid when defaults on the underlying mortgages or assets occur and may exhibit additional volatility in periods of rising interest rates. Rising interest rates tend to extend the duration of these securities, making them more sensitive to changes in interest rates than instruments with fixed payment schedules. When interest rates decline or are low, the prepayment of mortgages or assets underlying such securities can reduce a Fund's returns. U.S. Government Obligations Risk. U.S. Government obligations may be adversely impacted by changes in interest rates, and securities issued or guaranteed by U.S. Government agencies or government-sponsored entities may not be backed by the full faith and credit of the U.S. Government. Wells Fargo Funds - Income Funds 4

Performance The following information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year. The Fund's average annual total returns are compared to the performance of one or more indices. Past performance before and after taxes is no guarantee of future results. Current month-end performance is available on the Fund's website at wellsfargofunds.com. Calendar Year Total Returns for Class A as of 12/31 each year (returns do not reflect sales charges and would be lower if they did) 1 10% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Highest Quarter: 1st Quarter 2009 +3.01% 8% 6% 4% 2% 0% -2% 4.45 4.48-1.21 6.60 2.76 1.79 1.81 0.33 0.69-0.30 Lowest Quarter: 4th Quarter 2008-2.80% Year-to-date total return as of 9/30/2016 is +0.26% -4% Average Annual Total Returns for the periods ended 12/31/2015 (returns reflect applicable sales charges) 1 Inception Date of Share Class 1 Year 5 Year 10 Year Class A (before taxes) 6/30/2000-2.33% 0.44% 1.91% Class A (after taxes on distributions) 6/30/2000-2.59% 0.09% 1.07% Class A (after taxes on distributions and the sale of Fund Shares) 6/30/2000-1.32% 0.20% 1.16% Class C (before taxes) 6/30/2000-2.04% 0.11% 1.36% Bloomberg Barclays 6-Month Treasury Bill Index (reflects no deduction for fees, expenses, or taxes) 0.25% 0.20% 1.59% 1. Historical performance shown for all classes of the Fund prior to July 12, 2010 is based on the performance of the Fund's predecessor, Evergreen Adjustable Rate Fund. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) Plans or Individual Retirement Accounts. After-tax returns are shown only for the Class A shares. After-tax returns for the Class C shares will vary. 5 Wells Fargo Funds - Income Funds

Fund Management Manager Sub-Adviser Portfolio Manager, Title/Managed Since Wells Fargo Funds Management, LLC Wells Capital Management Incorporated Christopher Y. Kauffman, CFA, Portfolio Manager / 2008 Michal Stanczyk, Portfolio Manager / 2015 Purchase and Sale of Fund Shares In general, you can buy or sell shares of the Fund online or by mail, phone or wire on any day the New York Stock Exchange is open for regular trading. You also may buy and sell shares through a financial professional. Minimum Investments Minimum Initial Investment Regular Accounts: $1,000 IRAs, IRA Rollovers, Roth IRAs: $250 UGMA/UTMA Accounts: $50 Employer Sponsored Retirement Plans: No Minimum Minimum Additional Investment Regular Accounts, IRAs, IRA Rollovers, Roth IRAs: $100 UGMA/UTMA Accounts: $50 Employer Sponsored Retirement Plans: No Minimum To Buy or Sell Shares Mail:Wells Fargo Funds P.O. Box 8266 Boston, MA 02266-8266 Online:wellsfargofunds.com Phone or Wire:1-800-222-8222 Contact your financial professional. Tax Information Any distributions you receive from the Fund may be taxable as ordinary income or capital gains, except when your investment is in an IRA, 401(k) or other tax advantaged investment plan. However, subsequent withdrawals from such a tax advantaged investment plan may be subject to federal income tax. You should consult your tax adviser about your specific tax situation. Payments to Intermediaries If you purchase a Fund through an intermediary, the Fund and its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the intermediary and your financial professional to recommend the Fund over another investment. Consult your financial professional or visit your intermediary's website for more information. Wells Fargo Funds - Income Funds 6

Core Plus Bond Fund Summary Investment Objective The Fund seeks total return, consisting of current income and capital appreciation. Fees and Expenses These tables are intended to help you understand the various costs and expenses you will pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the aggregate in specified classes of certain Wells Fargo Funds. More information about these and other discounts is available from your financial professional and in "Share Class Features" and "Reductions and Waivers of Sales Charges" on pages 57 and 59 of the Prospectus and "Additional Purchase and Redemption Information" on page 61 of the Statement of Additional Information. Shareholder Fees (fees paid directly from your investment) Class A Class C Maximum sales charge (load) imposed on purchases (as a percentage of offering price) 4.50% None Maximum deferred sales charge (load) (as a percentage of offering price) None 1 1.00% 1. Investments of $1 million or more are not subject to a front-end sales charge but generally will be subject to a deferred sales charge of 1.00% if redeemed within 18 months from the date of purchase. Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) 1 Class A Class C Management Fees 0.45% 0.45% Distribution (12b-1) Fees 0.00% 0.75% Other Expenses 0.48% 0.48% Acquired Fund Fees and Expenses 0.01% 0.01% Total Annual Fund Operating Expenses 0.94% 1.69% Fee Waivers (0.20)% (0.20)% Total Annual Fund Operating Expenses After Fee Waiver 2 0.74% 1.49% 1. Expenses have been adjusted as necessary from amounts incurred during the Fund's most recent fiscal year to reflect current fees and expenses. 2. The Manager has contractually committed through December 31, 2017, to waive fees and/or reimburse expenses to the extent necessary to cap the Fund's Total Annual Fund Operating Expenses After Fee Waiver at 0.73% for Class A and 1.48% for Class C. Brokerage commissions, stamp duty fees, interest, taxes, acquired fund fees and expenses, and extraordinary expenses are excluded from the cap. After this time, the cap may be increased or the commitment to maintain the cap may be terminated only with the approval of the Board of Trustees. Example of Expenses The example below is intended to help you compare the costs of investing in the Fund with the costs of investing in other mutual funds. The example assumes a $10,000 initial investment, 5% annual total return, and that fees and expenses remain the same as in the tables above. To the extent that the Manager is waiving fees or reimbursing expenses, the example assumes that such waiver or reimbursement will only be in place through the date noted above. Although your actual costs may be higher or lower, based on these assumptions your costs would be: Assuming Redemption at End of Period Assuming No Redemption After: Class A Class C Class C 1 Year $522 $252 $152 3 Years $717 $513 $513 5 Years $928 $899 $899 10 Years $1,535 $1,981 $1,981 7 Wells Fargo Funds - Income Funds

Principal Investment Risks An investment in the Fund may lose money, is not a deposit of Wells Fargo Bank, N.A. or its affiliates, is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency, and is primarily subject to the risks briefly summarized below. Credit Risk. The issuer or guarantor of a debt security may be unable or perceived to be unable to pay interest or repay principal when they become due, which could cause the value of an investment to decline and a Fund to lose money. Derivatives Risk. The use of derivatives, such as futures, options and swap agreements, can lead to losses, including those magnified by leverage, particularly when derivatives are used to enhance return rather than mitigate risk. Certain derivative instruments may be difficult to sell when the portfolio manager believes it would be appropriate to do so, or the other party to a derivative contract may be unwilling or unable to fulfill its contractual obligations. Emerging Markets Risk. Emerging market securities typically present even greater exposure to the risks described under "Foreign Investment Risk" and may be particularly sensitive to global economic conditions. Emerging market securities are also typically less liquid than securities of developed countries and could be difficult to sell, particularly during a market downturn. Foreign Currency Contracts Risk. A Fund that enters into forwards or other foreign currency contracts, which are a type of derivative, is subject to the risk that the portfolio manager may be incorrect in his or her judgment of future exchange rate changes. Foreign Investment Risk. Foreign investments may be subject to lower liquidity, greater price volatility and risks related to adverse political, regulatory, market or economic developments. Foreign investments may involve exposure to changes in foreign currency exchange rates and may be subject to higher withholding and other taxes. Futures Contracts Risk. A Fund that uses futures contracts, which are a type of derivative, is subject to the risk of loss caused by unanticipated market movements. In addition, there may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes and there may at times not be a liquid secondary market for certain futures contracts. High Yield Securities Risk. High yield securities and unrated securities of similar credit quality (commonly known as "junk bonds") have a much greater risk of default or of not returning principal and their values tend to be more volatile than higher-rated securities with similar maturities. Interest Rate Risk. When interest rates rise, the value of debt securities tends to fall. When interest rates decline, interest that a Fund is able to earn on its investments in debt securities may also decline, but the value of those securities may increase. Loan Risk. Loans may be unrated, less liquid and more difficult to value than traditional debt securities. The highly leveraged capital structure of the borrowers in such transactions may make such loans especially vulnerable to adverse changes in financial, economic or market conditions. A Fund may be unable to sell loans at a desired time or price. The Fund may also not be able to control amendments, waivers or the exercise of any remedies that a lender would have under a direct loan and may assume liability as a lender. Management Risk. Investment decisions, techniques, analyses or models implemented by a Fund's manager or subadviser in seeking to achieve the Fund's investment objective may not produce the returns expected, may cause the Fund's shares to lose value or may cause the Fund to underperform other funds with similar investment objectives. Market Risk. The values of, and/or the income generated by, securities held by a Fund may decline due to general market conditions or other factors, including those directly involving the issuers of such securities. Security markets are volatile and may decline significantly in response to adverse issuer, regulatory, political, or economic developments. Different sectors of the market and different security types may react differently to such developments. Mortgage- and Asset-Backed Securities Risk. Mortgage- and asset-backed securities may decline in value and become less liquid when defaults on the underlying mortgages or assets occur and may exhibit additional volatility in periods of rising interest rates. Rising interest rates tend to extend the duration of these securities, making them more sensitive to changes in interest rates than instruments with fixed payment schedules. When interest rates decline or are low, the prepayment of mortgages or assets underlying such securities can reduce a Fund's returns. Swaps Risk. Depending on their structure, swap agreements and options to enter into swap agreements ("swaptions"), both of which are types of derivatives, may increase or decrease a Fund's exposure to long- or short-term interest rates, foreign currency values, mortgage-backed securities, corporate borrowing rates, or credit events or other reference points such as security prices or inflation rates. 9 Wells Fargo Funds - Income Funds

U.S. Government Obligations Risk. U.S. Government obligations may be adversely impacted by changes in interest rates, and securities issued or guaranteed by U.S. Government agencies or government-sponsored entities may not be backed by the full faith and credit of the U.S. Government. Performance The following information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year. The Fund's average annual total returns are compared to the performance of one or more indices. Past performance before and after taxes is no guarantee of future results. Current month-end performance is available on the Fund's website at wellsfargofunds.com. Calendar Year Total Returns for Class A as of 12/31 each year (Returns do not reflect sales charges and would be lower if they did) 20% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Highest Quarter: 3rd Quarter 2009 +5.53% 15% 11.87 Lowest Quarter: 2nd Quarter 2013-2.73% 10% 5% 5.32 6.24 2.29 7.98 7.77 5.59 6.47 Year-to-date total return as of 9/30/2016 is +8.13% 0% -5% -1.52-0.05-10% Average Annual Total Returns for the periods ended 12/31/2015 (returns reflect applicable sales charges) Inception Date of Share Class 1 Year 5 Year 10 Year Class A (before taxes) 7/13/1998-4.56% 2.63% 4.65% Class A (after taxes on distributions) 7/13/1998-5.40% 1.56% 3.24% Class A (after taxes on distributions and the sale of Fund Shares) 7/13/1998-2.52% 1.65% 3.09% Class C (before taxes) 7/13/1998-1.77% 2.82% 4.35% Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes) 0.55% 3.25% 4.51% After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) Plans or Individual Retirement Accounts. After-tax returns are shown only for the Class A shares. After-tax returns for the Class C shares will vary. Wells Fargo Funds - Income Funds 10

Fund Management Manager Sub-Adviser Portfolio Manager, Title/Managed Since Wells Fargo Funds Management, LLC Wells Capital Management Incorporated Ashok Bhatia, CFA, Portfolio Manager / 2015 Christopher Y. Kauffman, CFA,Porfolio Manager / 2015 Thomas M. Price, CFA, Portfolio Manager / 2005 Janet S. Rilling, CFA, CPA,Portfolio Manager / 2008 Noah M. Wise, CFA, Portfolio Manager / 2015 Purchase and Sale of Fund Shares In general, you can buy or sell shares of the Fund online or by mail, phone or wire on any day the New York Stock Exchange is open for regular trading. You also may buy and sell shares through a financial professional. Minimum Investments Minimum Initial Investment Regular Accounts: $1,000 IRAs, IRA Rollovers, Roth IRAs: $250 UGMA/UTMA Accounts: $50 Employer Sponsored Retirement Plans: No Minimum Minimum Additional Investment Regular Accounts, IRAs, IRA Rollovers, Roth IRAs: $100 UGMA/UTMA Accounts: $50 Employer Sponsored Retirement Plans: No Minimum To Buy or Sell Shares Mail:Wells Fargo Funds P.O. Box 8266 Boston, MA 02266-8266 Online:wellsfargofunds.com Phone or Wire:1-800-222-8222 Contact your financial professional. Tax Information Any distributions you receive from the Fund may be taxable as ordinary income or capital gains, except when your investment is in an IRA, 401(k) or other tax advantaged investment plan. However, subsequent withdrawals from such a tax advantaged investment plan may be subject to federal income tax. You should consult your tax adviser about your specific tax situation. Payments to Intermediaries If you purchase a Fund through an intermediary, the Fund and its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the intermediary and your financial professional to recommend the Fund over another investment. Consult your financial professional or visit your intermediary's website for more information. 11 Wells Fargo Funds - Income Funds

Government Securities Fund Summary Investment Objective The Fund seeks current income. Fees and Expenses These tables are intended to help you understand the various costs and expenses you will pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the aggregate in specified classes of certain Wells Fargo Funds. More information about these and other discounts is available from your financial professional and in "Share Class Features" and "Reductions and Waivers of Sales Charges" on pages 57 and 59 of the Prospectus and "Additional Purchase and Redemption Information" on page 61 of the Statement of Additional Information. Shareholder Fees (fees paid directly from your investment) Class A Class C Maximum sales charge (load) imposed on purchases (as a percentage of offering price) 4.50% None Maximum deferred sales charge (load) (as a percentage of offering price) None 1 1.00% 1. Investments of $1 million or more are not subject to a front-end sales charge but generally will be subject to a deferred sales charge of 1.00% if redeemed within 18 months from the date of purchase. Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Class A Class C Management Fees 0.43% 0.43% Distribution (12b-1) Fees 0.00% 0.75% Other Expenses 0.44% 0.44% Acquired Fund Fees and Expenses 0.01% 0.01% Total Annual Fund Operating Expenses 0.88% 1.63% Fee Waivers (0.02)% (0.02)% Total Annual Fund Operating Expenses After Fee Waiver 1 0.86% 1.61% 1. The Manager has contractually committed through December 31, 2017, to waive fees and/or reimburse expenses to the extent necessary to cap the Fund's Total Annual Fund Operating Expenses After Fee Waiver at 0.85% for Class A and 1.60% for Class C. Brokerage commissions, stamp duty fees, interest, taxes, acquired fund fees and expenses, and extraordinary expenses are excluded from the cap. After this time, the cap may be increased or the commitment to maintain the cap may be terminated only with the approval of the Board of Trustees. Example of Expenses The example below is intended to help you compare the costs of investing in the Fund with the costs of investing in other mutual funds. The example assumes a $10,000 initial investment, 5% annual total return, and that fees and expenses remain the same as in the tables above. To the extent that the Manager is waiving fees or reimbursing expenses, the example assumes that such waiver or reimbursement will only be in place through the date noted above. Although your actual costs may be higher or lower, based on these assumptions your costs would be: Assuming Redemption at End of Period Assuming No Redemption After: Class A Class C Class C 1 Year $534 $264 $164 3 Years $716 $512 $512 5 Years $914 $885 $885 10 Years $1,484 $1,931 $1,931 Wells Fargo Funds - Income Funds 12

Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 397% of the average value of its portfolio. Principal Investment Strategies Under normal circumstances, we invest: at least 80% of the Fund s net assets in U.S. Government obligations and repurchase agreements collateralized by U.S. Government obligations; and up to 20% of the Fund s net assets in non-government investment-grade debt securities. We invest principally in U.S. Government obligations, including debt securities issued or guaranteed by the U.S. Treasury, U.S. Government agencies or government-sponsored entities. These securities may have fixed, floating or variable rates and also include mortgage-backed securities. As part of our mortgage-backed securities investment strategy, we may enter into dollar rolls. We may also use futures for duration and yield curve management. We employ a top-down, macroeconomic outlook to determine the portfolio's duration, yield curve positioning and sector allocation. Macroeconomic factors considered may include, among others, the pace of economic growth, employment conditions, inflation, monetary and fiscal policy, as well as the influence of international economic and financial conditions. In combination with our top-down, macroeconomic approach, we employ a bottom-up process of fundamental securities analysis to select the specific securities for investment. Elements of this evaluation may include duration measurements, historical yield spread relationships, volatility trends, mortgage refinance rates, as well as other factors. We may sell a security due to changes in our outlook, as well as changes in portfolio strategy or cash flow needs. A security may also be sold and replaced with one that presents a better value or risk/reward profile. Principal Investment Risks An investment in the Fund may lose money, is not a deposit of Wells Fargo Bank, N.A. or its affiliates, is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency, and is primarily subject to the risks briefly summarized below. Credit Risk. The issuer or guarantor of a debt security may be unable or perceived to be unable to pay interest or repay principal when they become due, which could cause the value of an investment to decline and a Fund to lose money. Derivatives Risk. The use of derivatives, such as futures, options and swap agreements, can lead to losses, including those magnified by leverage, particularly when derivatives are used to enhance return rather than mitigate risk. Certain derivative instruments may be difficult to sell when the portfolio manager believes it would be appropriate to do so, or the other party to a derivative contract may be unwilling or unable to fulfill its contractual obligations. Futures Contracts Risk. A Fund that uses futures contracts, which are a type of derivative, is subject to the risk of loss caused by unanticipated market movements. In addition, there may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes and there may at times not be a liquid secondary market for certain futures contracts. Interest Rate Risk. When interest rates rise, the value of debt securities tends to fall. When interest rates decline, interest that a Fund is able to earn on its investments in debt securities may also decline, but the value of those securities may increase. Management Risk. Investment decisions, techniques, analyses or models implemented by a Fund's manager or subadviser in seeking to achieve the Fund's investment objective may not produce the returns expected, may cause the Fund's shares to lose value or may cause the Fund to underperform other funds with similar investment objectives. Market Risk. The values of, and/or the income generated by, securities held by a Fund may decline due to general market conditions or other factors, including those directly involving the issuers of such securities. Security markets are volatile and may decline significantly in response to adverse issuer, regulatory, political, or economic developments. Different sectors of the market and different security types may react differently to such developments. Mortgage- and Asset-Backed Securities Risk. Mortgage- and asset-backed securities may decline in value and become less liquid when defaults on the underlying mortgages or assets occur and may exhibit additional volatility in periods of rising interest rates. Rising interest rates tend to extend the duration of these securities, making them more sensitive to 13 Wells Fargo Funds - Income Funds